Scientific theories and scientific laws are both based on extensive observations, experimentation, and reasoning. what is the primary factor that distinguishes scientific laws from scientific theories?

a. scientific laws have been observed without exception in specific conditions.
b. scientific laws frequently change over time.
c. scientific laws tend to be conceptual and rarely use mathematics.
d. scientific laws are always true, even when conditions change.

You mix the pks of succinic acid are 4.21 and 5.64. how many gramsa graduate student at sdsu wants to measure the activity of a particular enzyme at ph 4.0. to buffer her reaction, she will use a buffer system based on one of the acids listed below, which acid is most appropriate for the experiment? of monosodium succinate (fw = 140 g/mol) and disodium succinate (fw = 162 g/mol) must be added to 1 l of water to produce a solution with a ph 5.28 and a total solute concentration of 100 mm? (assume the total volume remains 1 liter, answer in grams monosodium succinate, grams disodium succinate, respectively.) volumes of 0.05 m nah2po4 and 0.05 m na2hpo4 (pk's for phosphoric acid are 2.15, 6.82 and 12.38). which of the following best describes the resulting solution?

What reaction is taking place? 02 + c3h8 = h20 + co2

Is heavenly controller dating someone?